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Home >> Toyota >> 2004 >> Matrix Base, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Control System & Component Testing - 4-Cylinder) >> Emission Systems & Sub-Systems >> Hydrocarbon ADSORBER Catalyst System (PRIUS) >> Actuator For HCAC System & By-Pass Valve
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Actuator For HCAC System & By-Pass Valve

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tacoma, 2002 Toyota RAV4, 2002 Toyota Prius, 2002 Toyota MR2, and 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
  1. Remove front exhaust pipe. Remove actuator from front exhaust pipe. See Figure. To check the actuator, using vacuum pump, apply 9.83 in. Hg of vacuum to actuator while checking to see if rod on actuator is pulled inward. If rod is pulled inward, actuator is operating properly. If rod is not pulled inward, replace actuator.
  2. To check by-pass valve, ensure by-pass valve can be rotated in front exhaust pipe. If by-pass valve will not rotate, replace front exhaust pipe. Reinstall actuator and front exhaust pipe.
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